BS EN ISO 2398:2016
BSI Standards Publication
Rubber hoses, textile reinforced, reinforced, for compressed air — Specification (ISO 2398:2016)
BS EN ISO 2398:2016
BRITISH STANDARD
National foreword This British Standard is the UK implementation of EN ISO 2398:2016. It supersedes BS EN ISO 2398:2008 which is withdrawn. The UK participation in its preparation was entrusted to Technical Committee PRI/66, Rubber and plastics tubing, hoses and hose assemblies. A list of organizations represented on this committee can be obtained on request to its secretary. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. © The British Standards Institution 2016. Published by BSI Standards Limited 2016 ISBN 978 0 580 89079 6 ICS 23.040.70
Compliance with a British Standard cannot confer immunity from legal obligations. This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 December 2016.
Amendments/corrigenda issued since publication Date
Text affected
EN ISO 2398
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
November 2016
ICS 23.040.70
Supersedes EN ISO 2398:2008
English Version
Rubber hoses, textile-reinforced, for compressed air Specification (ISO 2398:2016) Tuyaux en caoutchouc renforcés textile pour l'air comprimé - Spécifications (ISO 2398:2016)
Gummischläuche mit Textileinlage für Druckluft Anforderung (ISO 2398:2016)
This European Standard was approved by CEN on 9 October 2016. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITE E FÜR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2016 CEN
All rights of exploitation in any form and by any means reserved worldwide for CEN national Members.
Ref. No. EN ISO 2398:2016 E
BS EN ISO 2398:2016
EN ISO 2398:2016 (E)
European foreword This document (EN ISO 2398:2016) has been prepared by Technical Committee ISO/TC 45 "Rubber and rubber products" in collaboration with Technical Committee CEN/TC 218 “Rubber and plastics hoses and hose assemblies” the secretariat of which is held by BSI. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by May 2017, and conflicting national standards shall be withdrawn at the latest by May 2017. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights. This document supersedes EN ISO 2398:2008. According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom.
Endorsement notice The text of ISO 2398:2016 has been approved by CEN as EN ISO 2398:2016 without any modification.
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BS EN ISO 2398:2016
ISO 2398:2016(E)
Contents
Page
Foreword ........................................................................................................................................................................................................................................ iv 1
Scope ................................................................................................................................................................................................................................. 1
2
Normative references ...................................................................................................................................................................................... 1
3
Terms and deinitions ..................................................................................................................................................................................... 1
4
Classiication ............................................................................................................................................................................................................ 2
5
Materials and construction ....................................................................................................................................................................... 2
6
Dimensions. ................................................................................................................................................................................................................ 2 6.1 Inside diameters and tolerances.............................................................................................................................................. 2 6.2 Concentricity............................................................................................................................................................................................. 3 6.3 Tolerance on length. ............................................................................................................................................................................ 3 6.4 Minimum thickness of lining and cover ............................................................................................................................ 3
7
Physical properties ............................................................................................................................................................................................ 4 7.1 Rubber compounds ............................................................................................................................................................................. 4 7.2 Finished hose............................................................................................................................................................................................ 4
8
Frequency of testing. ......................................................................................................................................................................................... 5
9
Type testing................................................................................................................................................................................................................ 5
10
Test report or certiicate .............................................................................................................................................................................. 5
11
Marking .......................................................................................................................................................................................................................... 5
Annex A (normative) Type tests and routine tests ................................................................................................................................ 6 Annex B (informative) Productions acceptance tests ......................................................................................................................... 7 Bibliography ................................................................................................................................................................................................................................ 8
© ISO 2016 – All rights reserved
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BS EN ISO 2398:2016
ISO 2398:2016(E)
Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. The procedures used to develop this document and those intended for its further maintenance are described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the different types of ISO documents should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives). Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of any patent rights identiied during the development of the document will be in the Introduction and/or on the ISO list of patent declarations received (see www.iso.org/patents). Any trade name used in this document is information given for the convenience of users and does not constitute an endorsement. For an explanation on the meaning of ISO speci ic terms and expressions related to conformit y assessment, as well as information about ISO’s adherence to the World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see the following URL: www.iso.org/iso/foreword.html. The committee responsible for this document is ISO/TC 45, Rubber and rubber products, Subcommittee SC 1, Rubber and plastics hoses and hose assemblies. This sixth edition cancels and replaces the ifth edition (ISO 2398:2006), which has been technically revised with the following main changes. — Clause 2 has been updated: ISO 1746 and ISO 4672 have been deleted and replaced by ISO 10619-1 and ISO 10619-2. ISO 7326:1991 has been replaced by ISO 7326:2006. — New clauses (Clause 8, Clause 9 and Clause 10) describing frequency of testing, routine tests, type tests and production acceptance tests have been added. — Clause 8 has been renumbered as Clause 11; a), b), f) and the example have been amended. — Annex A and Annex B have been introduced in accordance with ISO/TC 45/SC 1 Guide 976 — Rev 7:2013. — Clause 10, describing a test report or cert iicate supplied on request of the purchaser, has been added.
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© ISO 2016 – All rights reserved
BS EN ISO 2398:2016
INTERNATIONAL STANDARD
ISO 2398:2016(E)
Rubber hoses, textile-reinforced, for compressed air — Speciication WARNING — Persons using this document should be familiar with normal laboratory practice. This document does not purport to address all of the safety problems, if any, associated with its use. It is the responsibility of the user to establish appropriate health and safety practices and to ensure compliance with any national regulatory conditions.
1 Scope This document speciies the requirements for three t ypes, three classes and t wo categories of textilereinforced rubber hose for compressed air, up to a maximum working pressure of 25 bar with an operating-temperature range of −40 °C to +70 °C, depending on the type and category. NOTE
2
1 bar = 0,1 MPa.
Normative references
The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 37, Rubber, vulcanized or thermoplastic — Determination of tensile stress-strain properties ISO 188, Rubber, vulcanized or thermoplastic — Accelerated ageing and heat resistance te sts ISO 1307, Rubber and plastics hoses — Hose sizes, minimum and maximum inside diameters, and tolerances on cut-to-length hoses ISO 1402, Rubber and plastics hoses and hose assemblies — Hydrostatic testing ISO 1817:2015, Rubber, vulcanized or thermoplastic — Determination of the effect of liquids ISO 4671, Rubber and plastics hoses and hose assemblies — Methods of measurement of the dimensions of hoses and the lengths of hose assemblies ISO 7326:2006, Rubber and plastics hoses — Assessment of ozone resistance under static conditions ISO 8033, Rubber and plastics hoses — Deter mination of adhesion between components ISO 10619-1, Rubber and plastics hoses and tubing — Measurement of lexibility and stiffness — Part 1: Bending tests at ambient temperature ISO 10619-2:2011, Rubber and plastics hoses and tubing — Measurement of lexibility and stiffness — Part 2: Bending tests at sub-ambient temperatures
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Terms and deinitions
For the purposes of this document, the terms and deinitions given in ISO 8330 apply. ISO and IEC maintain terminological databases for use in standardization at the following addresses: — IEC Electropedia: available at http://www.electropedia.org/ — ISO Online browsing platform: available at http://www.iso.org/obp
© ISO 2016 – All rights reserved
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BS EN ISO 2398:2016
ISO 2398:2016(E)
4 Classiication Hoses are designated as one of the following types, depending on their pressure rating. Type 1:
Low pressure — designed for a maximum working pressure of 1 MPa (10 bar)
Type 2:
Medium pressure — designed for a maximum working pressure of 1,6 MPa (16 bar)
Type 3:
High pressure — designed for a maximum working pressure of 2,5 MPa (25 bar)
These types can be subdivided into three classes depending on their oil resistance. Class A:
Non-oil-resistant
Class B:
Normal oil resistance
Class C:
Good oil resistance
The types and classes above can also be further subdivided into two categories, depending on their operating-temperature range. Category N-T (normal temperature):
−25 °C to +70 °C
Category L-T (low temperature):
−40 °C to +70 °C
5 Materials and construction The hose shall consist of — a rubber lining, — a reinforcement of natural or synthetic textile, applied by any suitable technique, and — a rubber cover. The lining and cover shall be of uniform thickness, concentric to comply with the minimum thickness speciied, and free from holes, porosity and other defects . The cover inish may be smooth or fabric-marked.
6 Dimensions 6.1
Inside diameters and tolerances
When measured in accordance with ISO 4671, the inside diameters and their tolerances shall conform to the values speciied in Table 1.
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© ISO 2016 – All rights reserved
BS EN ISO 2398:2016
ISO 2398:2016(E)
Table 1 — Minimum and maximum inside diameters
6.2
Hose size
Minimum internal diameter mm
Maximum internal diameter mm
4
3,25
4,75
5
4,25
5,75
6,3
5,55
7,05
8
7,25
8,75
10
9,25
10,75
12,5
11,75
13,25
16
15,25
16,75
19
18,25
19,75
20
19,25
20,75
25
23,75
26,25
31,5
30,25
32,75
38
36,50
39,50
40
38,50
41,50
51
49,50
52,50
63
61,50
64,50
76
74,50
77,50
80
78,00
82,00
100
98,00
102,00
102
100,00
104,00
Concentricity
When determined in accordance with ISO 4671, the concentricity, based on a total indicator reading between the inside diameter and the outside surface of the cover, shall be no greater than 1,0 mm for hoses of inside diameter up to and including 76 mm, and no greater than 1,5 mm for hoses of inside diameter greater than 76 mm.
6.3
Tolerance on length
The tolerance on cut lengths shall be as speciied in ISO 1307, the length being measured in accordance with ISO 4671.
6.4
Minimum thickness of lining and cover
When measured in accordance with ISO 4671, the minimum thickness of the lining and cover shall be as follows. Type 1:
lining 1,0 mm cover 1,5 mm
Type 2:
lining 1,5 mm cover 2,0 mm
Type 3:
lining 2,0 mm cover 2,5 mm
© ISO 2016 – All rights reserved
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BS EN ISO 2398:2016
ISO 2398:2016(E)
7 Physical properties 7.1
Rubber compounds
When determined by the methods listed in Table 2, the physical properties of the compounds used for the lining and cover shall conform to the values speciied in Table 2. Tests shall be carried out either on samples taken from the hose or from separately vulcanized sheets, 2 mm in thickness and vulcanized to t he same cure state as the production hoses. Table 2 — Physical properties of rubber compounds Requirement
Property
Test method
Lining
Cover
7,0 MPa
7,0 MPa
ISO 37 (dumb-bell test piece)
250 %
250 %
ISO 37 (dumb-bell test piece)
Change in tensile strength from original value (max.)
±25 %
±25 %
Change in elongation at break from original value (max.)
±50 %
±50 %
ISO 188 (3 days at 100 °C ± 1 °C), air-oven method ISO 37 (dumb-bell test piece)
N/A
N/A
—
Increase in volume (max.) (class B only)
115 % No shrinkage a llowed
N/A
ISO 1817:2015 (72 h at 70 °C ± 2 °C in oil No. 3), gravimetr ic method
Increase in volume (max.) (class C only)
30 % 75 % ISO 1817:2015 (72 h at 70 °C ± 2 °C No shrinkage a llowed No shrinkage allowed in oil No. 3), gravimetr ic method
Minimum tensile strength Minimum elongation at break Resistance to ageing
Resistance to liquids Increase in volume (class A)
7.2
Finished hose
When determined by the methods listed in Table 3, the physical properties of the inished hose shall conform to the values speciied in Table 3. Table 3 — Physical properties of inished hose Property
Proof pressure
Requirement
Test method
MPa
bar
type 1
2
20
type 2
3,2
32
type 3
5
50
ISO 1402
Change in length at maximum working pressure
±5 %
ISO 1402
Change in diameter at maximum working pressure
±5 %
ISO 1402
Minimum burst pressure
Adhesion between components
4
MPa
bar
type 1
4
40
type 2
6,4
64
type 3
10
100
2,0 kN/m (min.)
ISO 1402
ISO 8033
© ISO 2016 – All rights reserved
BS EN ISO 2398:2016
ISO 2398:2016(E)
Table 3 (continued) Property
Requirement
Ozone resistance
No cracking observed under × 2 magniication
Flexibility at 23 °C
T /D not less than 0,8
Low-temperature lexibility
8
Test method ISO 7326:2006 — method 1 (up to 25 mm id) — method 2 or 3 for other sizes ISO 10619-1
ISO 10619-2:2011 No cracks and shall pass t he proof Category N-T at −25 °C ± 2 °C pressure test speci ied above Category L-T at −40 °C ± 2 °C
Frequency of testing
The minimum frequency of testing (routine tests and type tests) shall conform to the schedule given in Annex A. The recommended frequency of production acceptance testing, carried out per batch, is given in Annex B and is for guidance only. Routine tests are those tests carried out on each length of inished hose to verify t hat the hose design, materials and method of manufacture meet all the requirements of this document. Production acceptance tests are those tests, carried out per batch or per 10 batches, by the manufacturer to monitor the quality of his production.
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Type testing
Type tests are carried out by the manufacturer to coni rm that all t he materials, construction and test requirements of this document have been met by the method of manufacture and design. Type testing shall be repeated at a maximum of ive years or whenever a change in the method of manufacture or materials occurs. Type testing shall be performed for all sizes and types except those of the same size and construction.
10 Test report or certiicate Upon the purchaser’s request, the manufacturer shall supply a test report or certiicate, positively identifying the hoses supplied to the purchaser.
11 Marking The hose shall be continuously and durably marked with the following minimum information: a)
the manufacturer’s name or identiication (XX XX);
b) the number and year of publication of this document (ISO 2398:2016); c)
the hose type and class;
d) the category, if low-temperature (L-T); e)
the inside diameter, in mm;
f)
the maximum working pressure, in MPa and bar, with units stated;
g)
the date of manufacture, by giving the quarter and year of manufacture or using another suitable date code. EX AMPLE XX XX/ ISO 2398:2016/2B/L-T/25 mm/1,6 MPa/16 bar/2Q16.
© ISO 2016 – All rights reserved
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BS EN ISO 2398:2016
ISO 2398:2016(E)
Annex A (normative) Type tests and routine tests
Table A.1 gives the tests to be carried out for type and routine testing as deined in Clause 8. Table A.1 — Type and routine test frequency Property
Type tests
Routine tests
Tensile streng th/elongation at break, lining and cover: Table 2
X
N.A.
Resistance to ageing, lining and cover: Table 2
X
N.A.
Resistance to liquids, lining and cover: Table 2
X
N.A.
Inside diameter and tolerance: Table 1
X
X
Concentricity: 6.2
X
X
Tolerance on length: 6.3
X
X
Minimum thickness of lining and cover: 6.4
X
X
Hydrostatic proof pressure test: Table 3
X
X
Change in length at maximum working pressure: Table 3
X
X
Change in diameter at maximum working pressure: Table 3
X
N.A.
Burst strength test: Table 3
X
N.A.
Adhesion between compounds: Table 3
X
N.A.
Ozone resistance test: Table 3
X
N.A.
Flexibility/bending test at ambient temperature: Table 3
X
N.A.
Low-temperature lexibility: Table 3
X
N.A.
Compound test s
Hose tests
X Test shall be carr ied out. N.A. Test not applicable.
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© ISO 2016 – All rights reserved
BS EN ISO 2398:2016
ISO 2398:2016(E)
Annex B (informative) Productions acceptance tests
Table B.1 gives the recommended frequency of production acceptance tests (see Clause 8) to be carried out per batch or per 10 batches of identical hose as indicated in the table. A batch is identiied as either 500 m of hose or 10 000 kg of lining and/or cover compound. Table B.1 — Recommended test frequency Property
Production test Per batch Every 10 batches
Compound tests Tensile strength and elongation at break, lining and cover: Table 2
X
X
Resistance to ageing, lining and cover: Table 2
N.A.
X
Resistance to liquids, lining and cover: Table 2
N.A.
X
Inside diameter and tolerance: Table 1
N.A.
N.A.
Concentricity: 6.2
N.A.
N.A.
Tolerance on length: 6.3
N.A.
N.A.
Minimum thickness of lining and cover: 6.4
N.A.
N.A.
Hydrostatic proof pressure test: Table 3
N.A.
N.A.
Change in length at maximum working pressure: Table 3
N.A.
N.A.
Change in diameter at maximum working pressure: Table 3
N.A.
N.A.
Burst strength test: Table 3
N.A.
X
Adhesion between compounds: Table 3
X
X
Ozone resistance test: Table 3
X
X
Flexibility/bending test at ambient temperature: Table 3
X
X
N.A.
X
Hose tests
Low-temperature lexibility: Table 3 X Test to be carr ied out. N.A. Test not applicable.
© ISO 2016 – All rights reserved
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BS EN ISO 2398:2016
ISO 2398:2016(E)
Bibliography [1]
8
ISO 8330, Rubber and plastics hoses and hose assemblies — Vocabulary
© ISO 2016 – All rights reserved
BS EN ISO 2398:2016
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